Capacitor aluminum foil is made of high-purity aluminum, which is widely used in capacitors, high voltage transformers and other industries. The thickness of aluminum foil for capacitor is 0.006mm, and the width can be made 500mm, and specific requirements can be customized. 1060 aluminum foil has the characteristics of high plasticity, corrosion resistance, electrical conductivity and thermal conductivity. The 1060 aluminum foil used in electrolytic capacitors is a corrosive material that works under polar conditions, it has higher requirements for the structure of the aluminum foil.
The capacitor aluminum foil used is divided into three types: cathode aluminum foil, with a thickness of 0.015mm to 0.06mm; high-voltage aluminum foil, with thickness of 0.065mm-0.1mm, and the aluminum foil is required to be produced with high-purity aluminum; the thickness of the low-pressure aluminum foil is 0.06mm-0.1mm.
The basic structure of aluminum electrolytic capacitors includes anode aluminum foil, cathode aluminum foil, electrolyte, aluminum shell, plastic cover and other components. Among them, the anode aluminum foil (ie, corroded into foil) and electrolyte (ie the actual cathode of aluminum electrolytic capacitor) play a major role in the performance of aluminum capacitors. 30%-70% of the cost of aluminum electrolytic capacitors comes from the corrosion formed foil. Electrode aluminum foil is a key basic material for the production of aluminum electrolytic capacitors and is used to carry charges. The performance of the electrode aluminum foil determines the capacity, leakage current, loss, life, reliability, volume and other key technical indicators of aluminum electrolytic capacitors. It is also one of the most valuable and most technically needed parts in the aluminum electrolytic capacitor industry chain.
The selection of capacitor aluminum foil determines the performance and quality of aluminum electrolytic capacitors, and the stability and reliability of capacitor quality further determines the quality of the entire electronic product.